Hazel pollen allergy is common in Sweden and the season usually occurs during winter and early spring. The hazel begins to bloom in January-February and can last until April, depending on where in the country you are. The symptoms of a hazel pollen allergy can include a runny nose, sneezing, itchy eyes and nose, as well as possible asthmatic symptoms.
According to statistics from the Asthma and Allergy Association in Sweden, allergy to hazel pollen is relatively common in Sweden. If you suspect that you suffer from an allergy to hazel pollen, you can take a blood test to find out if you have high levels of IgE antibodies, which is an indication of allergy.
It is important to note that an allergy test cannot detect or rule out an allergy 100%, the analysis can be used as a supplement to your possible symptoms and disease picture.